In Reply to: 535i handling question posted by Lorraine Radcliff on February 26, 2000 at 13:13:57:
Your exact question could have been written by me 6 months ago. I bought a (UK) 525i SE with 235/45 tyres on 17" rims - exactly the same effect on uneven roads. I posted several questions about it and received loads of helpful answers. The archives are full of info about tramlining.
I was really worried something major was fundamentally wrong. I am now pretty sure it isn't. You MAY have a suspension/steering problem but it is unlikely. The answer is almost certainly that your tyres/rims are way too "fat" for the chassis with the result that the tyres tramline and the chassis follows.
There are numerous suggested ways of trying to reduce the effects (see archives and Ross' response) but I don't think you wil ever remove the effect totally unless you resort to standard spec tyres/wheels.
My wheels look sooooo cool and so I haven't changed over - but I think about it a lot.
One cheap and quick "remedy" (which is advisable to have done anyway) is to make sure the tracking is perfect (with no toe-in preferably). It will ease things a little.
In the meantime, keep both hands on the wheel!